悬索桥预拱度的曲线拟合应用，在已知桥梁固定点的位置时，根据已知几个点采用几种不同精度的方法对预拱度进行拟合。-The degree of suspension bridge arch curve fitting application, known in the position of the bridge protection, according to several points using several different known the accuracy of the method of pre-splitting arch degree fitting.